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Sky Digital BSkyB, Freesat & Saorsat support forum
Sky & Freesat fringe reception
In-Line Satellite Signal Booster
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<blockquote data-quote="Lazarus" data-source="post: 642067" data-attributes="member: 323322"><p>Those Amplifiers are purely for compensating for local signal losses eg from an unduly long cable run.</p><p></p><p>Because they actually add noise, they will do nothing at all to compensate for absence of received signal and may degrade whatever Signal Quality you do have.</p><p></p><p>All you can do is:</p><p></p><p>a. Use a bigger Dish</p><p>b. Ensure your cable is as lossless as possible - Good quality, good condition, good connections, no joins.</p><p>c. Make microscopic adjustments to alignment of the Dish and LNB Skew.</p><p></p><p></p><p>Some might advocate a "better" LNB, but in reality this is hit and miss as the quoted Noise Figure is only one of the relevant parameters governing overall performance and in any case only applies to a small part of the Band.</p><p></p><p>Not sure what to make of your remarks about Twin Output LNB vs. Splitter.</p><p></p><p>You can't successfully use a simple splitter for DSAT as each Receiver needs to control LNB Polarity and Band. Apart from which, splitting the available signal will degrade it severely in marginal conditions such as yours.</p><p></p><p>An LNB with sufficient outputs to independently feed each Tuner is de rigeur.</p></blockquote><p></p>
[QUOTE="Lazarus, post: 642067, member: 323322"] Those Amplifiers are purely for compensating for local signal losses eg from an unduly long cable run. Because they actually add noise, they will do nothing at all to compensate for absence of received signal and may degrade whatever Signal Quality you do have. All you can do is: a. Use a bigger Dish b. Ensure your cable is as lossless as possible - Good quality, good condition, good connections, no joins. c. Make microscopic adjustments to alignment of the Dish and LNB Skew. Some might advocate a "better" LNB, but in reality this is hit and miss as the quoted Noise Figure is only one of the relevant parameters governing overall performance and in any case only applies to a small part of the Band. Not sure what to make of your remarks about Twin Output LNB vs. Splitter. You can't successfully use a simple splitter for DSAT as each Receiver needs to control LNB Polarity and Band. Apart from which, splitting the available signal will degrade it severely in marginal conditions such as yours. An LNB with sufficient outputs to independently feed each Tuner is de rigeur. [/QUOTE]
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Sky Digital BSkyB, Freesat & Saorsat support forum
Sky & Freesat fringe reception
In-Line Satellite Signal Booster
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